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Two trains on separate tracks move toward each other. Train first has a speed of 124 km/h; second train a speed of 68.0 km/h. Second train blows its horn, emitting a frequency of 500 Hertz. Obtain the frequency heard by the engineer on first train?
___________Hz
a 85-turn circular coil has diameter 4.3cm and resistance 2.9o. this coil is placed inside a solenoid with coil and
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 574 Hz and has a speedof 24.0 m/s. What frequency does the motorcyclist hear
air enter a horizontal cylinderical pipe with creoss sectional area of 0.04m2 operating at steady state at 280 k 1 bar
Two parallel copper conductors are each 0.590 m long. They carry 9.7-A currents in opposite directions.
two ships a and b leave port at the same time. ship a travels northwest at 21 knots and ship b travels at 30 knots in a
A solid sphere with a radius of 0.70 m can be rotated about an axis through its center by a torque of 10.5 N *m which accelerates it uniformly from rest through a total of 180 revolutions in 15.0 s
A young hockey player stands at rest on the ice holding a 1.1 kg helmet. What is the mass of the hockey player
A superhero flies 287 meters from the top of a tall building at an angle of 17 degrees below the horizontal. What is the vertical component of the superhero's displacement? Answer in units of meters. The horizontal is 274.459 meters and the vertical ..
Typical roller coasters only have one motor to pull the cars up to the top of the first and highest hill. explain why the first hill must be the highest
a 1.5 kg bass is swimming along at 2.5 m/s when it ingests a .50 kg minnow traveling in the opposite direction at 3 m/s. what is their speed just after this "interaction"
A 44 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.40 x10^5 N·m2/C. What is the magnitude of the electric field.
An air core solenoid contains 1060 m^-1 turns of wire per meter and has a cross-sectional area of 0.127 m^2, If the resistance of the loop is 0.00535, then estimate what is the induced current
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